Merge branch 'feature/skip-blank-xml' into 'master'
Issue warning and ignore empty XML tags This MR modifies the session reader logic to ignore empty XML tags which would otherwise replace non-empty tags. This prevents, for example, the empty CONDITIONS section generated by NekMesh from displacing the user-provided conditions if the user condition file is supplied before the mesh file on the command-line. @ssherw: This has been tested locally and everything passed. Just running through buildbot now. See merge request !581